Icebreaker  Siren Sweetheart T-Shirt - Women's

If you're considering purchasing this shirt, take note that the fit is *very* slim, and also that this is considered "underwear". I was fooled by the fact that it's listed as a t-shirt, and showed up in search results for Icebreaker shirts. This is way too fitted for me to wear to work, which is what I was hoping to use it for. It's unfortunate, because this neckline is much more flattering than the scoop necklines on the other shirt options. Love Icebreaker products, but giving this an average rating because of the sizing.

I have about 5 of this t-shirts in multiple colors. I used them on a 3 month bike trip in SE Asia, hiking in Nepal, running and at the gym. They are soft, light weight, dry quick and never smell. I got ride of my polypro shirts that would stink so bad, I couldn't stand it. I now only wear wool. These are my favorite t-shirts and wear them almost every day for sports and/or with a skort going out for the day or to dinner. Perfect for many occasions. Recommend them all the time.

[This review was collected as part of a promotion.] I use this shirt for Hiking. It's cool in the summer and comfortable. I don't know how it works, but somehow it keeps the sweat from getting stinky. One thing you need to know about this brand is you have to wash it on gentle setting. Also, I ordered a size bigger than I might ordinarily order cause I didn't want it to be too snug. Large was perfect when medium is usually what I order on other shirts.

I was searching for a slim fitting wide, neck undershirt to wear under my sweaters for this winter. I get smelly pits no matter what I do and having to wash a thick sweater after wearing it for only a few hours when it really isn't dirty, except for my armpits was frustrating. I came across this shirt, and based on the reviews, decided to order a small and a medium to see which one would be the best next to skin fit. Happily the small fits perfectly. It is very thin and very lightweight. I wouldn't wear it on its own as a T-shirt but for my purpose of wearing underneath sweaters for the winter it's perfect. For reference I am 5'5" 145lb with a slim athletic build. The reviews were so mixed on whether or not it was too tight or too loose from people with similar measurements that I decided and take advantage of icebreakers free returns to send back whichever had a looser fit, which was the medium.

I bought a few of these four years ago and I would not recommend them. They were expensive so I will wear them out, but they are itchy and hold onto odor. After a few other purchases, I now avoid Icebreaker’s merino blends, because the itch doesn’t improve over time and they tend to get permastink (which my blends from other brands don’t, even those with more nylon and less merino).

[This review was collected as part of a promotion.] I love these t-shirts for all my active sports. No matter how much I sweat, these shirts never smell. I've switched over all my polypropylene to wool. These are light weight and super comfortable. Great for layering too. I also use the long sleeve version for another layer. I'm always cold on airplanes and can regulate my temp based on my layers. Love love love these t's.

[This review was collected as part of a promotion.] I bought this specifically to layer underneath sweaters during the winter. Now, I'm realizing that I can use it during all seasons because it's so light and breathable. It's a snug fit, but that's exactly what I wanted so that it's not too baggy. I'm looking into buying another!

Compared to other wool brands, Icebreaker holds up better and lasts longer. I wear daily under my work shirt, and it helps them last and keeps me from getting stinky in tech shirts! I even machine wash and dry them and they last years.

[This review was collected as part of a promotion.] I love the neckline and figure hugging fit of this tee. I wear it alone but it would also work great as an undershirt during cooler months. The feel isn't as silky soft as some of my other Icebreaker clothing but I don't find it itchy at all.

[This review was collected as part of a promotion.] I love the color and quality of this wool blend T-shirt. The neckline is elegant and the length is nice. I only gave one less star because the shirt runs quite tight and I would have preferred a slightly looser fit.